Intake manifold



G. H. PETERSON.

INTAKE MANIFOLD.

APPLICATION FILED JAN. 24, 1920.

1,402,8 Patented Jan.10,1922.

GEORGE E. PETERSON. F STORY CITY, IOWA.

INTAKE MANIFOLD.

Application filed January 24, 1920.

To all whom it may concern:

Be it known that I, GEORGE H. Pnrnnson, a citizen of the United Statesof America, and resident of Story Cit-y, Story County, Iowa, haveinvented a new and useful Improvement in Intake Manifolds, of which thefollowing is a specification.

The object of this invention is to provide means for limiting andrestricting flow through a manifold and particularly toward one outlettherefrom.

My invention consists in the provision of means for limiting andrestricting the fiow of fuel mixture through an intake manifold andparticularly toward one out-let therefrom.

My invention consists further in the construction, arrangement andcombination of elements hereinafter set forth pointed out in my claimand illustrated by the accompanying drawing, in which-- Figure 1 is anelevation of a common form of intake-manifold, to which one form of myimprovement is applied. Figure 2 is a horizontal section on theindicated line 2-2 of Figure 1. Figure 3 is a vertical section on theindicated line 3-3 of Figure 1.

The drawing illustrates generally a common form of intake manifohhordinarily employed in the Ford construction to supply fuel mixture tofour cylinders arranged in a row. The manifold is constructed. in asingle piece of metal by molding, and comprises a neck flaring frombottom to top; a goose-neck 11 having a flange 12 adapted to be securedto a carburetor (not shown) and afford communication between saidcarbureter and the lower end of said stem; lateral arms 13, 1%commimicating'at their inner ends with the wider upper end portion ofthe neck; and rip-turned end portions 15, 16011 the outer ends of thearms, each of which end portions is formed with a face 17 (one of whichis shown in Figure 3) adapted to fit a seat on an engine casing (notshown) and provided with a port registering with a port in said seat.The front and rear portions 18, 19 of the wall of the Specification ofLetters latent.

Patented Jan. 11), 1922.

Serial No. 353,767.

neck 10 are differently inclined as shown.

Ordinarily the cross-sections of the arms 13, 1

arms and ports is unequal, there being ma terially greater flow throughthe arm 14 and its terminal port particularly under suction of theforemost cylinder and into said foremost cylinder, than through the arm13 or even to the second cylinder relative to the foremost. Such greaterflow provides a charge in the foremost cylinder beyond the capacity ofits ignition device to explode and beyond the capacity of its exhaustdevice to scavenge. To avoid this difficulty it is desirable to limit orrestrict the flow or passage of fuel mixture through the arm 1 1 andexperiment has demonstrated that such effectmay be well produced in theman ner illustrated. A slot is formed in the front portion 18 of thewall of the neck 10 adjacent to the inner end of the arm 1i, and abatiie plate is mounted rigidly in said slotand extends into the bore orcavity of the neck. It would seem to be preferable to form the slot andinsert and solder or braze the baffle plate therein as giving greateraccuracy in the location of the inner edge of the baffle plate; however,the plate may be formed integral with the wall by molding, or othermeans may be employed to effect a restriction of the flow through thearm'll, without departing from the spirit of my invention.

I claim as my invention In an intake manifold having a neck and twolateral arms leading therefrom, said neck being formed with a. tranverseslot, a baffle plate mounted rigidly in said slot and extending withinthe bore of said neck adjacent to the inner end of one of said arms.

Signed at Story City, in the county of Story and State of Iowa, this 31day of Dec,

GEORGE H. PETERSON.

